A fridge fix invoiced on a text message reads like a hobby. The same fix on a clean, itemized invoice — service call, model and serial, flat-rate repair, parts — reads like the shop the customer meant to hire. Here's exactly what goes on it.
Nine things. Miss one and you either look small-time, lose a warranty dispute, or wait longer to get paid.
Business name, phone, email, and your registration or license number if your state issues one. This is the difference between "some guy" and a business — put it at the top of every invoice.
Brand, model, and serial number. It ties the work to one machine, protects you if a warranty claim comes back, and makes the next parts order a 30-second lookup instead of a second trip.
The diagnostic fee is its own line. If you credit it toward the repair, show the credit too. A customer who can see you honored the fee pays without the phone call.
"Replace control board — $260" beats an hourly breakdown. Flat-rate is how appliance work is quoted, and it's what the customer approved before you ordered the part.
Each part with its price. Keep your cost private — the customer sees the price, your books see the margin. That gap is your real profit, and you should know it per job.
Sales tax if your state taxes repair labor or parts, one clear total, and the ways you take money — card, Venmo, Zelle, Cash App. The fewer steps to pay, the sooner it's paid.
Whatever you stand behind — commonly 90 days on labor and the part's own manufacturer warranty — in one line. It heads off the callback argument before it starts.
Sequential number, date of service. Your tax preparer needs it, a small-claims judge respects it, and a numbered invoice is harder to "forget" than a text.
Refrigerator not cooling. Diagnosed as a failed control board, fee credited into the flat-rate repair.
| Item | Amount |
|---|---|
| Service call & diagnosis | $95.00 |
| Replace main control board (flat rate) | $260.00 |
| Service call credited to repair | −$95.00 |
| Sales tax (8.25%) | $21.45 |
| Total due | $281.45 |
Quote $95 on the phone, then hide it inside a bigger number, and the customer feels played. Show the fee, show the credit. Trust is the fastest route to "paid."
Six months later the board fails again. Without the serial on paper, you're re-diagnosing for free and arguing about which fridge you fixed. Two lines of text prevent all of it.
"You owe me $281" in a text thread has no number, no terms, no record. It also gets forgotten. A real invoice gets paid faster because it's obviously owed.
In SideWRK, the estimate the customer approved becomes the numbered invoice — appliance, serial, parts, tax, and your license on it. Then it tracks whether you got paid, and what you actually made. Here's the full invoicing guide, or see it working in the live appliance repair demo.
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